Sole-leather-cutting machine.



APPLICATION FILED APR. 6, 1914.

Patented Apr. 27', 1915.

1: NORRIS PETERS CO. PHOTC-LITHO.. WASHINGTON, D. c.

* HE era AW ENCE n. JOHNSON, or wrnrnnor,

MACHINERY 00., OF BOSTON, MASSAGE snrrs.

MASSACHUSETTS, ASSIGNOR T0 VICTOR SHOE USETTS, A CORPORATION OF MASSACHU- SOLE-LEATHER-CUTTING MACHINE.

Specification of Letters Patent.

PatcntedApr. 27, 1915.

Application filed April 6, 1914. Serial No. 830,078.

To all whom it may concern:

Be it known that I, LAWRENCE E. JOHN- SON, a citizen of the United States of America, and a resident of Winthrop, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Sole-Leather-Cutting Machines, of which the following is a' specification. V This invention relates to leather cutting machines and particularly to machines in this class adapted for cutting soles, the special object of the invention being to provide a simple and inexpensive machine which may be used in a shoe repair shop for cutting out the half and whole soles used in repair work.

The invention consists primarily in mechanism for feeding the material and a reciprocating knife in the path of movement of the material, said knife in addition to its reciprocatory movement having a vibratory movement first in the direction of feed and then in the opposite direction.

The invention further consists in certain novel features of construction and arrangement of parts which will be fully understood by reference to the description of the drawings and to the claims hereinafter iven. Of the drawings: Figure 1 represents an elevation ofa machine embodying the features of the present invention. Fig. 2 represents an end view of the'same. Fig. 3 represents a vertical section of the same looking toward the left of Fig. 2, the cuttingplane being-on line 3-3 of Fig. 1. Fig. 4: represents a similar section looking in the opposite direction, the cutting plane being on line 3-3 on Fig. 1. Fig. 5 represents a vertical section, showing the cutting knife and the feed rolls, and Fig. 6 represents a left end elevation of the same, the supports for the channeling knife being shown in section.

Similar characters designate like parts throughout the several figures of the drawin s. I

Tn the drawings, 10 is the frame of the machine having mounted therein two parallelrevoluble shafts 11 and 12. The shaft 11 is rotated by a crank 13 and has secured thereto and revoluble therewith the gear 14 meshing with the gear 15 secured to one end of the shaft 12. It is obvious that when the crank 13 is operated the shafts 11 and 12 will be rotated in opposite directions. The opposite ends of the shafts 11 and 12 have secured thereto the feed rolls 16 and 17 by which thematerial to be cut is fed. The shaft 11 has mounted thereon and movable endwise thereof the guide member 18 havmg formed upon the frame 10 to which it is clamped in adjusted position by means of the clamp member 20.

In order to adjust the feed rolls 16-17 relative to each other for varying thicknesses of material the shaft 12 is mounted in eccentric bearings 21 mounted in the frame 10 and each of which is provided with a depression into which extends a lug 22 formed upon the end of a yoke 23, having a handle 24 formed integral therewith by which said yoke may be moved to cause said bearings 21 to be rotated about their axes and the axes "of the shafts 11 and 12 moved toward or from each other as the case may be. The handle has secured thereto' a slotted sector 25 through the slot of which extends a clamp screw 26 threaded to an ear 27 extending upwardlv from the frame 10. this clamp screw 27 being adapted to lock the yoke 23 and bearings 21 in their adjusted positions. Against the face of the feed rolls 16-17 and secured to the shafts 11 -12 are two eccentrics 28-29, preferably extending from said shafts in opposite direction as indicated in Fig. 5 of the drawings. 2 The eccentric 29 is positioned in a circular opening in the upper end of a cutting knife 30, the lower end of which is provided with an elongated slot 31 in which is positioned the eccentric 28. As the two eccentrics 28 and 29 rotate in opposite directions the knife 80 will be given a vibratory movement in the path of feed. As the eccentric 29 rotates the knife will be given a reciprocatorv movement perpendicular to the material being fed.

The combined reciprocatory and vibraa forked lower end straddling a rib 19 tory movements of the knife 30 cause it first to move with the material being fed but at a slower speed and then to move against the material being fed. The prininto the work. A reduced end 32 of the shaft 12 has mounted thereon a channeling knife 33, the upper end of which is provided with a slot 34 through which extends the pin 35 extending outwardly from 16 lug 36 on the frame 10.

The pin 36 has a washer 37 and a nut 38 thereonand the reduced end 32 is also provided with a washer89 and a nut 40, these nuts 38 and 40 servingto position the channeling knife 33. As the material is fed by the-rolls 1617 against the cutting edge of the knife the knife 33 will cut a channel into the work. 1

The machine is particularly adapted for use in a repair shop, where, as a rule,'unskilled labor is employed, making it particularly desirable that the machines used shall be extremely simple in construction and free from liability to get out of order.

When straight strips of leather orother i material are to be cut, the gage 18 is adjust- 7 ed and then used as a guide for the edge of b the material. When this work is being done the channeling knife is removed. /Vhen soles or half soles are being cut the guide 18 is not used, but, with a pattern as a guide, the soles are trimmed to the desired shape and the channel cut therein at the same time.

The teeth of the gears 14l15 are so constructed as to provide for the adjustment of the shaft 12 relative to the shaft ll'without moving said gears out of mesh with each other. The knife 33 is prevented from becoming displaced upon the shafts 11-12 by the washer 39 and nut 40 on the shaft 12 1 and the washer 41 and nut 42 on the shaft 11.

It is believed that the operation and many advantages of this invention will be fully understood from. the foregoing description.

Having: thus described my invention, I claim: I

1. In a device of the class described, the combination of two parallel shafts revoluble 5 in opposite directions; a cutting knife; and

means on said shafts for imparting a combined reciprocatory and vibratory movement to said knife.

2. In a device of the class described, the combination of two feed rolls a knife having a cutting edge perpendicular to tlIG'ELXGS of said rolls;-and means revoluble with said feed rolls for imparting to said knife a combined simultaneously reciprocatory and vibratory movement in the same plane.

3.111 a device of the class described, the

combination of two feedirolls; a knife having a cutting edge perpendicular to the axes of said rolls; and means operable with said feed rolls for simultaneously reciprocating said knife and simultaneously moving it first in the direction of'feed and 'posite direction.

4:. In a device of the class described, the combination of two feed rolls; a cutting then in the op knife having an opening therethrough at one end; and an eccentric in said opening revoluble with one of said feed rolls. 7

5. In a device of the class described, the combination of tWo' feedrolls; a cutting knife having openings therethrough at opposite ends; and eccentrics in said openings 7. In a device of theclassdescribed, the

combination of face of said knife; and means coacting with the opposite end ing thereto combined reciprocatory and vi ratory movement in the same plane;

8. In a device of the class described, the combination of a cutting knife; .a guide therefor at one end perpendicular to aside face of said knife; and means coacting with the opposite end for imparting thereto a reciprocatory movement perpendicular to said guide.

9. In a device of the class described, the combination of a cutting lmife; a 1 guide therefor atone end perpendicularto a side face of said knife; and means coacting with the opposite end for imparting thereto a vifor simultaneously imparta cutting knife; a'guide therefor at 'oneend perpendicular to a side 7 V bratory movement with said guide as a pivot. 10. In a device of the class described, the combination of a cutting knife; and means coacting with oppositeends thereof for simultaneously imparting thereto a combined reciprocatory and vibratory movement in the same plane. I

11. In a' device of the class described, the combination of a cutting knife; and means for f imparting independent movements to the opposite ends thereof.

l2. Ina device of the class described, the

combination of a cutting knife; means for imparting independent movements to the opposite ends thereof; and-means for feeding material against the cutting edge ofsaid knife during the movement thereof.

eccentrics; eccentric bearings for one of said shafts; and means for adjusting the positionof said eccentric bearingsto vary the positions of said feed rolls relative toeach other.

15. In a device of the class described, the combination of two revoluble parallel shafts; feed rolls mounted on the ends thereof and revoluble therewith; eccentrics on the ends of said shafts; a cutting knife operable by said eccentrics; eccentric bearings for one of said shafts; an adjustable yoke on said shaft provided at opposite ends With means for engaging said bearings; and means for looking said yoke in adjusted position.

16. In a device of the class described, the combination of a feed roll; a reciprocating knife in the path of feed; and a stationary channeling knife in said path.

17 In a device of the class described, the combination of Work feeding mechanism; a reciprocating knife in the path of feed; and a stationary channeling knife in said path.

18. In a device of the class described, the combination of a revoluble feed roll; a shaft on which said roll is mounted; a reciprocating cutting knife in the path of feed; and a. non-revoluble gage movable endWise of said shaft and adapted to be secured in adjusted position.

Signed by me at Boston, Mass, this 3rd day of April, 1914.

LAWRENCE E. JOHNSON.

Witnesses:

WALTER E. LOMBARD, NATHAN O. LOMBARD.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of I'atents, Washington, .D. G. 

